Cognomen Айра (Aira 
, Ajra 
, Ayra ) , across the world, is a widespread family name. The cognomen Айра is characteristic of India, where it is quite a common surname, Peru, where it is quite a rare surname, and Bolivia. In absolute terms, it is commonest in India, Indonesia, and Peru. Also, Айра is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aira | Japan, Indonesia, Philippines, India, Peru |
| Ajra | Indonesia, Peru, India, Bangladesh, Brazil |
| Ayra | Indonesia, Peru, Philippines, India, Brazil |
| Айра | Kazakhstan, Russia, Ukraine |